<div dir="auto">Wow. That would be great. :-)<div dir="auto"><br></div><div dir="auto">Imho, the thumbnail should reflect what the raw contains rather than what the camera spit out as a secondary product. </div><div dir="auto">(I'm not sure why Ricoh went with the opposite.)</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Oct 3, 2018, 11:34 Maik Qualmann <<a href="mailto:metzpinguin@gmail.com">metzpinguin@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">We can also automate the behavior by changing 2 lines of code. If the <br>
extracted preview image of a RAW file is a grayscale image, we will read the <br>
RAW image. Now would then RAW files always colored. Would this behavior be <br>
okay?<br>
<br>
Maik<br>
<br>
Am Mittwoch, 3. Oktober 2018, 12:09:43 CEST schrieb Cirrus:<br>
> As others have said, the value of seeing the b&w jpeg immediately after<br>
> taking a shot is nearly critical. Plus the particular rendering this<br>
> camera produces is something I very much like.<br>
> <br>
> The point about the impact on speed in DK if the embedded raw thumbnail is<br>
> regenerated is a serious concern. Although doing so should be optional and<br>
> a user would likely understand they are invoking a penalty.<br>
> <br>
> That said, darktable does this (as an option for a thumbnail outside of the<br>
> raw) and the penalty, to me, is quite minor. I'd very much like to have the<br>
> choice in DK.<br>
> <br>
> Given all the information everyone has kindly provided here (Thank you!),<br>
> it doesn't seem like there's a easy solution. I'll probably continue doing<br>
> organization and tagging in DK but move culling and rating over to<br>
> darktable. So it goes.<br>
> <br>
> On Sat, Sep 29, 2018, 04:59 Gilles Caulier <<a href="mailto:caulier.gilles@gmail.com" target="_blank" rel="noreferrer">caulier.gilles@gmail.com</a>> wrote:<br>
> > Hi,<br>
> > <br>
> > Changing the color space in camera while shooting will affect preview<br>
> > included in RAW.<br>
> > <br>
> > RAW preview are mostly a small JPEG image embedded in RAW container. DK<br>
> > extract this JPEG as well to render icon view thumbnails. It's very very<br>
> > fast as no post processing is required.<br>
> > <br>
> > Using RAW image data will be really slower to render large albums, and<br>
> > will decrease DK performances. Even if libraw decoder can use fast RAW<br>
> > extraction method without to much post processing, the democaising of<br>
> > bayer<br>
> > matrix will be a bottleneck.<br>
> > <br>
> > Using sidecar can be a solution. Here i don't talk about XMP sidecar file,<br>
> > but the .thm file coming with RAW file (Canon generate this kind of file,<br>
> > as i know)...<br>
> > <br>
> > But this will introduce another dysfunction, as THM file include also<br>
> > metadata which do not correspond well with RAW metadata (incomplete).<br>
> > THM cannot be used as metadata source, and this will increase the<br>
> > complexity of metadata workflow.<br>
> > <br>
> > Gilles Caulier<br>
> > <br>
> > 2018-09-29 9:12 GMT+02:00 Andrew Goodbody <<a href="mailto:ajg02@elfringham.co.uk" target="_blank" rel="noreferrer">ajg02@elfringham.co.uk</a>>:<br>
> >> On 29/09/18 07:55, Maik Qualmann wrote:<br>
> >>> I did not understand the problem at first, but I can reproduce it with<br>
> >>> my<br>
> >>> Nikon. First of all, it is not a good idea to take a image in B&W<br>
> >>> digitally.<br>
> >>> There are many more ways to do it later, but for the JPEG the color<br>
> >>> information is lost. There is currently no option in digiKam to specify<br>
> >>> that a<br>
> >>> thumbnail should be created from the RAW image. It uses the "fastest"<br>
> >>> source<br>
> >>> and that is the preview image. That was of course stored by the camera<br>
> >>> in B&W.<br>
> >>> <br>
> >>> Maik<br>
> >> <br>
> >> Sounds like this could be a wishlist item for a 'sidecar-jpeg' which<br>
> >> could be used for raw files to contain a preview image developed using<br>
> >> the<br>
> >> current edit settings for the raw file.<br>
> >> <br>
> >> Andrew<br>
<br>
<br>
<br>
<br>
</blockquote></div>